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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Harford County Department of Public Works

Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND60ND
2015ND40ND
2016ND50ND
2017ND70ND
2018ND40ND
2019ND30ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for alachlor, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-250120016_01_L4988ND
2014-04-140120016_03_L5015ND
2014-07-220120016_01_00029ND
2014-07-220120016_03_00029ND
2014-09-030120016_03_20271ND
2014-10-200120016_02_00148ND
2015-04-062063479001BND
2015-07-06L5692388-1ND
2015-10-19E16001689007ND
2015-10-19E16001689009ND
2016-04-04L6167673_1_AND
2016-05-09E16004258004ND
2016-05-09E16004258006ND
2016-05-09E16004258002ND
2016-07-113496449ND
2017-04-053672580_AND
2017-04-053672580ND
2017-04-19E17004140001ND
2017-04-19E17004139001ND
2017-06-19E17005021001ND
2017-06-263720780_81ND
2017-07-102245174002ND
2018-05-078051040_01ND
2018-06-04E18004355009ND
2018-06-04E18004355007ND
2018-06-04E18004355011ND
2019-05-149050789_01ND
2019-07-31E20000444001ND
2019-08-139080708_01ND